this derivation will be built:
  /nix/store/mhzyz1mfijzyxj67znh6sf2q42y9cjdg-bcachefs-module-7.0.0-39-generic.drv
building '/nix/store/mhzyz1mfijzyxj67znh6sf2q42y9cjdg-bcachefs-module-7.0.0-39-generic.drv'...